asp.net – RadGrid自定义过滤器

我按照this site上的教程,提出了以下代码放在我的RadGrid1_ItemCommand事件中.

protected void RadGrid1_ItemCommand(object source,GridCommandEventArgs e)
        {
            if (e.CommandName == RadGrid.FilterCommandName)
            {
                Pair filterPair = (Pair)e.CommandArgument;

                switch (filterPair.Second.ToString())
                {               
                    case "vendNum":
                        TextBox tbPattern = (e.Item as GridFilteringItem)["vendNum"].Controls[0] as TextBox;
                        if (tbPattern.Text.Contains(","))
                        {
                            string[] values = tbPattern.Text.Split(',');
                            if (values.Length >= 2)
                            {
                                e.Canceled = true;
                                StringBuilder newFilter = new StringBuilder();
                                for (int i = 0; i < values.Length; i++)
                                {
                                    if (i == values.Length - 1)
                                        newFilter.Append("[vendNum] = " + values[i]);
                                    else
                                        newFilter.Append("[vendNum] = " + values[i] + " OR ");
                                }
                                if (RadGrid1.MasterTableView.FilterExpression == "")
                                    RadGrid1.MasterTableView.FilterExpression = newFilter.ToString();
                                else
                                    RadGrid1.MasterTableView.FilterExpression = "((" + RadGrid1.MasterTableView.FilterExpression + ") AND (" + newFilter.ToString() + "))";
                                RadGrid1.Rebind();
                            }
                        }
                        break;
                    default:
                        break;
                }
            }
        }

但是,当我尝试使用逗号分隔列表进行过滤时,执行此操作会不断给出错误“Expression Expected”.我仍然可以过滤一个vendNum.我的FilterExpression确实按预期出现.代码在RadGrid1.Rebind()语句中失败.以前有人处理过这个吗？任何帮助是极大的赞赏.

谢谢,

亚伦

忘了编辑这个

我几周前解决了这个问题……我不得不在RadGrid下将“EnableLinqExpressions”属性设置为false.